Subject: Re: lib/30664: realpath and magic symlinks
To: Jason Thorpe <thorpej@shagadelic.org>
From: Hisashi T Fujinaka <htodd@twofifty.com>
List: tech-kern
Date: 07/08/2005 09:23:06
On Fri, 8 Jul 2005, Jason Thorpe wrote:

>
> On Jul 4, 2005, at 4:26 PM, yamt@mwd.biglobe.ne.jp wrote:
>
>>> Description:
>>> 
>>     realpath(3) (or, more generally, userland code which resolves
>>     symlinks by itsself using readlink(2)) doesn't handle
>>     magic symlinks and can cause problems.
>>     it's subtle because it isn't obvious which of userland or kernel
>>     resolves a symlink for a given application.
>
> Perhaps readlink(2) should translate the magic symlink?  But that would break 
> ls(1).  Perhaps we could add a readlink2(2) that takes a flags argument, 
> allowing us to specify "raw" or "translated".  readlink(2) would default to 
> "translated", and ls(1) would be changed to use "raw".

Could this be my problem with toolchain/30682?

-- 
Hisashi T Fujinaka - htodd@twofifty.com
BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte